Governments and international donors have long financed tractors for small farmers in the backward rural areas as a means of increasing their standard of living and promoting development. Past experiences in the provision of collective tractors to these areas showed negative results in that the tractors ended up benefiting mostly better-off farmers or were left in the countryside without mainte...

this study tries to codify a proper mathematical model which can be predict the costs of repair and maintaining the tractors as precisely as possible for three common models of tractors in shahid beheshti cultivation firm in andimeshk-ahvaz road of dezfoul. studied tractors include: newhland tm155 tractor which is chosen from the most perfect file of 10 tractor machines and jandier tractor-3140...

This article reports on the implementation of published guidelines for retrofitting tractors with safe access platforms, which were developed to reduce the risk of serious injuries and deaths associated with mounting and dismounting. Farmer interviews and engineering-based inspections of ten retrofitted tractors were conducted to gather information regarding benefits and disadvantages of the re...

Beginning in the mid-1970s, standard small-bale forage balers began to be replaced by large-bale balers in the agricultural industry. The chance for serious injury or death to workers grows with the size and weight of bales. Bales that weigh more than 750 pounds put workers at especially high risk. According to NIOSH analysis of data from the Bureau of Labor Statistics (BLS) Census of Fatal Occ...

The improvement and reliability of the agricultural machines provided a revolution in the human activities facilitating the production of commodities of agribusiness. Though, the efficiency of the tractor, well as the occurrence of accidents also depends on the level of fatigue to which the operator is submitted. Between the ergonomic factors that affect the operator machine, noise and vibratio...

OBJECTIVE The purpose of this systematic review was to evaluate the effectiveness of roll-over protection structures (ROPS) as an engineering control for prevention of fatalities from farm tractor roll-overs. METHODS Using a systematic approach to literature searching, relevant studies from peer-reviewed journals, technical and government reports, and unpublished reports were retrieved. Studi...

Traction performance tests were run by Alberta Farm Machinery Research Centre personnel on fourwheel drive tractors with single, dual and triple rubber tires and on track tractors with two and four rubber belt tracks. Traction power delivery efficiency was compared in various tilled and untilled soil conditions representative of the Northern Great Plains. Various ballast set-ups and tire inflat...

Predicting the maintenance and management costs and replacement age of tractors in agricultural mechanized units, is important from several points. So, doing a timely agricultural operations, more accurate measure of the amount of income  including the cost of these items , determining the useful life of old tractors , replacement age, cost of the process changes and the possibility of examinin...

Between 1920 and 1939 a nearly six-fold increase occurred in the number of tractors on American farms, from 246,000 tractors in 1920 to 1,445,000 tractors in 1939 [5]. This substantial growth in tractor usage occurred during a period where the role of the tractor in agricultural production was changing. In 1920, the tractor was primarily viewed as the supplier of the peak power needs in spring ...